Power Conversion Calculator
Don’t let manually converting power measurements slow down your project. LED Lighting Supply’s Power Conversion Calculator allows you to instantly and accurately convert between watts, kilowatts, horsepower, and BTUs.
How long does it take to convert power? This easy, done-for-you calculator converts power systems in 1 second
How to Use LED Lighting Supply's Free Power Conversion Calculator Tool
Select a unit of power and enter your value into the calculator. LED Lighting Supply’s free calculator tool supports the following power units:
- Watts
- Kilowatts
- Horsepower (Mechanic)
- Horsepower (Electric)
- British Thermal Unit Per Hour (BTU)
Once you enter the power unit in the conversion calculator, the other units of power will automatically be converted for you, instantly.
Who is this Electric Power Conversion Tool Best For?
LED Lighting Supply’s power converter calculator is ideal for contractors of various types, specifically electrical contractors, and facility managers who need quick, accurate unit conversions.
Power Conversion Chart
| Starting Power | Multiplier | Ending Value | Unit Conversion |
|---|---|---|---|
| 1 W | × 0.001 | 0.001 kW | Watts to Kilowatts |
| 1 W | × 0.001341 | 0.001341 HP | Watts to Mechanical HP |
| 1 W | × 0.001340 | 0.001340 HP | Watts to Electric HP |
| 1 W | × 3.412 | 3.412 BTU/hr | Watts to BTU/hr |
| 1 kW | × 1000 | 1000 W | Kilowatts to Watts |
| 1 kW | × 1.341 | 1.341 HP | Kilowatts to Mechanical HP |
| 1 kW | × 1.340 | 1.340 HP | Kilowatts to Electric HP |
| 1 kW | × 3412 | 3412 BTU/hr | Kilowatts to BTU/hr |
| 1 Mechanical HP | × 745.7 | 745.7 W | HP (Mech) to Watts |
| 1 Mechanical HP | × 0.7457 | 0.7457 kW | HP (Mech) to Kilowatts |
| 1 Mechanical HP | × 1.013 | 1.013 HP | HP (Mech) to Electric HP |
| 1 Mechanical HP | × 2546 | 2546 BTU/hr | HP (Mech) to BTU/hr |
| 1 Electric HP | × 746 | 746 W | HP (Elec) to Watts |
| 1 Electric HP | × 0.746 | 0.746 kW | HP (Elec) to Kilowatts |
| 1 Electric HP | × 0.987 | 0.987 HP | HP (Elec) to Mechanical HP |
| 1 Electric HP | × 2546 | 2546 BTU/hr | HP (Elec) to BTU/hr |
| 1 BTU/hr | × 0.293 | 0.293 W | BTU/hr to Watts |
| 1 BTU/hr | × 0.000293 | 0.000293 kW | BTU/hr to Kilowatts |
| 1 BTU/hr | × 0.000393 | 0.000393 HP | BTU/hr to Mechanical HP |
| 1 BTU/hr | × 0.000392 | 0.000392 HP | BTU/hr to Electric HP |
Our calculator is helpful during planning phases, installations, or facility audits. Whether you're managing a large industrial project or simply researching energy usage, this tool saves time and converts across unit systems.
Measuring Electricity - What Are The Main Electrical Units of Measurement?
Wattage, Also Known As Watt (W) or Watts
Power in Watts (W) measures the rate of energy transferred over time. Watts are referred to as the amount of energy required to operate an appliance, while volt-amperes measure electricity potential. Watts are standard units of power in residential, commercial, and industrial applications.
Kilowattage, Also Commonly Referred to as Kilowatt (kW)
A Kilowatt (kW) is equal to 1,000 watts and is commonly used to indicate the power usage of large equipment, and over time is measured in kilowatt-hours (kWh) for energy consumption.. Kilowatts are standard units of power in residential, commercial, and industrial applications.
Horsepower (hP)
Horsepower (hp) is used to measure mechanical or electrical power, for example motors in fans or HVAC systems.
- One electrical horsepower (hpE) equals 746 Watts (W)
- One mechanical horsepower (hpM) equals 745.7 Watts (W)
What is the difference between mechanical and electrical horsepower? Mechanical horsepower (hpM) is commonly used for rating in automotive and /engine systems, while electrical horsepower (hpE) is used for motor-rated outputs.(hpE) is used for electric motor-rated and industrial equipment outputs.
British Thermal Unit (BTU)
British Thermal Unit (BTU) refers to the measurement of heat energy. It is used to determine the necessary amount of energy to increase temperatures. One BTU equals approximately 0.293 watts. It is widely used in HVAC to describe heating or cooling capacity.
Basic Power Conversion Formulas
Watts to Amps (A) Conversion Formula:
Amps (A) is a measurement of electric charge or the strength of an electric current. To calculate amps, use our amps calculator or divide the Watts (W) by the Volts (V).
- Amps = Watts (W) / Volts (V)
Basic Power Calculation Formulas:
Power Conversion Formula Using Volts and Amps
Use this formula to calculate Watts from Voltage and Current:
- Power (W) = Voltage (V) × Current (A)
Amps Current Conversion Using Watts and Volts
Use this formula to calculate current from Watts and Volts:
- Current (A) = Power (W) ÷ Voltage (V)
Milliamperes Conversion Formula
Milliamperes current is a measurement of electric charge or the strength of small electric currents. It's equal to 1 ampere (A) divided by 1,000. Use this formula to convert current from Power and Voltage:
- Current (mA) = Current (A) × 1000
